KIM VS. KRISTIN

Reality star showdown! Kardashian posed for photos in her yellow Black Halo dress in Monaco over the summer, while Cavallari brightened up the Max Payne premiere in her one-shouldered dress this past week.

MADONNA VS. JENNIFER

The Material Girl made a stop at BET back in May in her Givenchy by Ricardo Tisci dress under a fur-collared coat, while the recent triathlete shows off her fit shape in her chain-topped minidress while partying in Greece.

JESSICA VS. BEYONCE VS. ELIZA

One dress, three stars, one week! The singer promoted her fragrance in Chicago in her Nicole Miller dress, while “Sasha Fierce” hit the stage in London in her trompe l’oeil dress over leggings. The actress heated up the red carpet in L.A. in her sparkling mini a few days later.

RACHEL VS. DREW

The Married Life actress hit the red carpet in her Gucci dress at the Toronto Film Festival in September, while the Grey Gardens star snuggled up to beau Justin Long in her tri-color frock at a pre-Oscar party last week in L.A.

BLAKE VS. CAMERON

It’s the hot date dress! Lively wore her Rag & Bone tunic out for dinner with boyfriend Penn Badgley in New York, while a few days later Diaz got cozy with model Paul Sculfor in her blue-and-white minidress.

BRITNEY VS. HEIDI

The pop star went for comfort in her printed Hale Bob dress, pairing it with shearling boots on her way back to L.A., while the model lent casual elegance to the same frock with chic ballet flats while picking up flowers in the city.

LINDSAY VS. SARAH JESSICA

Lohan wore this metallic Nina Ricci gown with a leather jacket for a photo shoot in L.A. last winter, while Parker unknowingly hit the red carpet in the same gown for the N.Y.C. Sex and the City premiere. (Click here for the full story on the controversy.)

KELLY VS. MARISSA

The perky talk show host arrives at The Late Show with David Letterman in her Marc by Marc Jacobs dress, while the Dancing with the Stars semifinalist celebrates the show’s 100th episode in her frilled strapless frock.

CHLOE VS. DIANE

Fashionista faceoff! The always-quirky actress pairs her Lanvin tank with a short skirt at an N.Y.C. lunch for the line, while the National Treasure star pairs her face-printed tee with cropped pants at the Berlin film festival.